I generated an Updater Key, now all I get is "Name resolver fail, DDNS update fail!" using the Cisco Router, and similar using DynUPSvc API. Neither am I able to use my original legacy credentials as the previous reply suggests. I have spent at least 2 hours combing through the FAQs and videos on how to restore the account to legacy mode (which worked fine for my application). Now I can only due updates manually.

How can I remove this Updater Key and restore my Pro account to legacy mode?